CN101429858B - Oil field shaft mouth clamping seat - Google Patents
Oil field shaft mouth clamping seat Download PDFInfo
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- CN101429858B CN101429858B CN2008100127238A CN200810012723A CN101429858B CN 101429858 B CN101429858 B CN 101429858B CN 2008100127238 A CN2008100127238 A CN 2008100127238A CN 200810012723 A CN200810012723 A CN 200810012723A CN 101429858 B CN101429858 B CN 101429858B
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Abstract
The invention relates to oilfield workover operation equipment, in particular to an automatic oilfield well-head clamping base for use in workover operation. A clamping base body is arranged on a frame. The inside of the clamping base is provided with a slip. A part, around the slip, of the frame is provided with a crankshaft with a slip connecting rod. One end of the slip connecting rod is fixedly connected with the crankshaft, while the other end is hinged with the slip. The bottom of the frame is provided with a hydraulic cylinder which is connected with the crankshaft through a four-linkage mechanism. The inside of the frame is provided with a hydraulic control electromagnetic valve set which is connected with the hydraulic cylinder through an oil line. A working panel is arranged on the clamping base body. Parts, at two sides of the working panel, of the frame are provided with an upper detection optical screen, a well-head clamp locking device, a lower detection optical screen and a well-head clamp unlocking device symmetrically from top down. The well-head clamp locking and unlocking devices are connected with the hydraulic control electromagnetic valve set through oil lines respectively. The oilfield well-head clamping base has the advantages of well-head unmanned operation, wide application range, automatic detection, automatic opening and closing of the slip and so on.
Description
Technical field
The present invention relates to oil well repairing operation equipment, specifically a kind of when well workover oil field shaft mouth clamping seat that use, automation.
Background technology
Well workover is the important step in the oilfield process.At present, the clamping of oil pipe (sucker rod) and hang and adopt two elevators or single elevator to add the operating type of portable slips mostly during workover treatment.It is big that two elevator operations exist labor strength, inefficiency, problems such as poor safety performance; Though and single elevator adds portable drill pipe slip operation and can suitably increase work efficiency, because elevator and slips own wt are bigger, generally at 60～over 80 kg, so labor strength is still very big.
Deck is the special tool that is used for blocking and hanging down-hole oil tube, sucker rod, drilling rod, sleeve pipe and power drilling tool etc., also usually is used to cooperate elevator in the well workover process, realizes raising and decentralizing of oil pipe (sucker rod).During workover treatment, because the switching of traditional deck is by manually finishing, so well head must be arranged the multi-position action personnel.Generally speaking, well head needs five people: two people are responsible for operating shaft mouth clamping seat or elevator is realized drawing, arranging of oil pipe (sucker rod), two people are responsible for operating the last shackle of elevator and hydraulic tongs realization oil pipe (sucker rod), and a people is responsible for operating workover rig and realizes raising and decentralizing of oil pipe (sucker rod).
Along with the attention to safety in production of the development of automation detection and control technology and oil field and various circles of society, this two elevator operations of adopting for a long time or single elevator add the work pattern that portable slips or single elevator add pneumatic deck and demand change urgently.Realize the workover treatment automation, particularly the well head operation is unmanned, has become the problem that current oil well repairing operation presses for solution.
Summary of the invention
Exist labour intensity big in order to solve in the present work-over operation process well head operating personnel in clamping with when hanging oil pipe (sucker rod), efficient is low, and the problem of personal safety accident very easily takes place, the object of the present invention is to provide that a kind of well head operation is unmanned, the oil field shaft mouth clamping seat of automation.
The objective of the invention is to be achieved through the following technical solutions:
The present invention includes framework, deck body, hydraulic cylinder, quadric chain, slips connecting rod and bent axle, the deck body is installed on the framework, in the deck body, be provided with slips, the framework of slips both sides is provided with the bent axle that has the slips connecting rod, one end of slips connecting rod is fixed on the bent axle, and the other end and slips are hinged; The bottom of framework is equipped with hydraulic cylinder, and hydraulic cylinder is connected with bent axle by quadric chain; Be provided with the hydraulic control electromagnetic valve group in the framework, hydraulic cylinder is connected with the hydraulic control electromagnetic valve group by oil circuit; The deck body is provided with working plate, from top to bottom be symmetrically arranged with respectively on the framework of working plate both sides and detect light curtain, well head pintle hook lock device, detect light curtain and well head down and drive the card device, well head is opened, the pintle hook lock device is connected with the hydraulic control electromagnetic valve group by oil circuit respectively; Respectively be provided with a light curtain box in the framework of described both sides, on detect the light curtain and detect down the light curtain and be installed in respectively in the two light curtain boxes, between light curtain and light curtain box, be provided with heating tape; Be sealed and installed with metal backup shoe on light curtain box, metal backup shoe is provided with glass plate; Also be provided with thermocouple on the light curtain box; Heating tape, light curtain and thermocouple are connected with control system by Explosion proof joint respectively.
Wherein: perforate in the middle of the described working plate, on working plate, interstitial hole around be provided with a plurality of magnetic induction sensors, the periphery of magnetic induction sensor is evenly equipped with a plurality of elevator limited blocks; Slips is four, about being divided into two groups; Be respectively equipped with the bent axle that has the slips connecting rod on the framework of four slips both sides, every group two slips and slips connecting rod are hinged; Slips is provided with dismountable slip dog; Slip dog is provided with the tooth of a plurality of right-angled triangles, has locating hole on slip dog; Be provided with flange below the framework; Flange, deck body and working plate all have side door vertically; Well head is opened, the pintle hook lock device is made up of hydraulic cylinder and contact, and the front end of hydraulic cylinder piston rod is provided with external screw thread, is provided with internal thread in the contact, and both are by being threaded.
Advantage of the present invention and good effect are:
The present invention has realized that well head operation is unmanned, applied widely, can realize saving hoop automatic detection, slips automatic shutter, elevator open kayser card and the functions such as detection and localization of elevator on deck automatically.Be specially:
1. the present invention has realized that oil pipe (sucker rod) well head locatees automatically and carry, the automatic detection of oil pipe (sucker rod) joint hoop, the automatic shutter of slips, elevator open kayser card and the detection and localization of elevator on deck automatically, the danger of both having avoided manually-operated to exist has improved operating efficiency again.
2. slips adopts hydraulic-driven, can realize the fast and reliable clamping to oil pipe (sucker rod) automatically; Slip dog has multiple model, only need can realize that it is convenient to change, and has further improved operating efficiency again to the clamping of the sucker rod of the oil pipe of different tube diameters or different size by changing slip dog.
3. well head is opened, the pintle hook lock device also adopts hydraulic-driven, can finish automatically to elevator open card, pintle hook lock, the automaticity height, simple to operate.
4. the flange of deck below design can be convenient to be connected with preventer or well head big four.
5. detect the light curtain up and down and can control the position of the switch and the detection and location pipe collar of slips; Magnetic induction sensor can detect whether correct location or do not leave of elevator, has guaranteed the reliability and the accuracy of the course of work.
Description of drawings
Fig. 1 concerns schematic diagram for the position that the present invention is applied in the workover rig;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is for removing the partial top view behind the working platform among Fig. 2;
The structural representation that Fig. 5 opens for slips;
Fig. 6 is the structural representation of flange among Fig. 2;
Fig. 7 is the vertical view of Fig. 6;
Fig. 8 is the structural representation of elevator in the well workover operation machine;
Fig. 9 is the structural front view of slip dog of the present invention;
Figure 10 is the A-A revolved sectional view among Fig. 9;
Figure 11 is the B-B revolved sectional view among Fig. 9;
Figure 12 is the enlarged drawing at I place among Fig. 9;
Figure 13 is the enlarged drawing at II place among Figure 10;
Figure 14 is for carrying the control system flow chart of oil pipe process in the present invention;
Figure 15 is the control system flow chart of drain line process under the present invention;
Figure 16 is the structural representation of light curtain box;
Figure 17 is the left view of Figure 16;
Figure 18 is the schematic appearance of light curtain box;
Wherein: 1 is deck, and 2 is the well workover operation machine fuselage, and 3 is controller chassis, and 4 is the well workover operation machine chassis, 5 is well head, and 6 is hydraulic tongs, and 7 is oil pipe (sucker rod), and 8 is leading, 9 is framework, and 10 is last detection light curtain, and 11 is well head pintle hook lock device, and 12 for detecting the light curtain down, 13 drive the card device for well head, and 14 are the hydraulic control electromagnetic valve group, and 15 is flange, 16 is working plate, and 17 is slips, and 18 is the elevator limited block, 19 for opening the door, and 20 is slip dog, and 21 is magnetic induction sensor, 22 is hydraulic cylinder, and 23 is quadric chain, and 24 is suspension ring, 25 is the deck body, and 26 is the slips connecting rod, and 27 is bent axle, 28 is housing, and 29 is first push rod, and 30 is spring, 31 is second push rod, and 32 is claw, and 33 is the claw torsion spring, 34 is first, and 35 is second, and 36 is the location hook torsion spring, 37 is location hook, and 38 is the claw slide block, and 39 is locating hole, 40 is link, and 41 is light curtain box, and 42 is heating tape, 43 is thermocouple, and 44 is glass plate, and 45 is metal backup shoe.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, one side of deck 1 of the present invention is the well workover operation machine fuselage 2 that is installed on the well workover operation machine chassis 4, hydraulic tongs 6 is installed on the expansion bracket of well workover operation machine, tap 8 is positioned at the top of well workover operation machine fuselage 2 and deck 1, deck 1 directly drops on the well head 5, and well workover operation machine fuselage 2 is provided with switch board 3; Tap 8 stretches out when work, and aligns well head 5; When not working, the tap withdrawal is so that transportation.
As Fig. 2～shown in Figure 4, the present invention includes framework 9, deck body 25, hydraulic cylinder 22, quadric chain 23, slips connecting rod 26 and bent axle 27, framework 9 adopts frame constructions, is welded by many square steel pipes, is divided into two parts up and down.Deck body 25 is installed in the latter half of framework 9, is provided with four slips 17 in deck body 25, about being divided into two groups; Be respectively equipped with the bent axle 27 that has slips connecting rod 26 on the framework 9 of four slips 17 both sides, an end of slips connecting rod 26 is fixedly mounted on the bent axle 27 by key, and two slips 17 of every group are hinged with the other end of slips connecting rod 26; Slips 17 is provided with dismountable slip dog 20, is convenient to quick replacing, only need just can realize clamping to the sucker rod of the oil of different tube diameters or different size by the slip dog 20 of changing different size; Shown in Fig. 9～13, slip dog 20 is divided into four, and radial section is an annular, is furnished with the tooth of right-angled triangle on the interior circle of annular; Be evenly equipped with the tooth of 25 right-angled triangles on each piece slip dog 20, be used to block oil pipe (sucker rod) 7; Also be provided with a locating hole 39 on each piece slip dog 20, slip dog 20 is installed on the slips 17 by locating hole 39.Deck body 25 is provided with working plate 16, have the centre bore that fuel feed pump or sucker rod pass through at the middle part of working plate 16, the first half of 16 liang of side frame bodies 9 of working plate from top to bottom is symmetrically arranged with respectively and detects light curtain 10, well head pintle hook lock device 11, detect light curtain 12 and well head down drives card device 13, last detection light curtain 10 is arranged on the position of framework 9 the first half well head pintle hook lock devices 11 tops, is used to locate the pipe collar position; Detect light curtain 12 down and be arranged on well head and open position between card device 13 and the well head pintle hook lock device 11, be used for determining opening the time of slips 17; Two are gone up 10, one on detection light curtain is infrared transmitter, and another is an infrared remote receiver; Two are detected 12, one on light curtain down is infrared transmitter, and another is an infrared remote receiver.Well head is opened, pintle hook lock device 13,11 is connected with hydraulic control electromagnetic valve group 14 by oil circuit respectively; Well head is opened, pintle hook lock device 13,11 is formed by hydraulic cylinder and contact, and the front end of hydraulic cylinder piston rod is provided with external screw thread, is provided with internal thread in the contact, and both are by being threaded; By well head open, hydraulic cylinder piston rod in the pintle hook lock device 13,11 promotes that elevator is opened, pintle hook lock push rod and then realize that elevator is in the opening of pithead position, pintle hook lock action; More can realize adjustment by adjusting the length that is threaded between hydraulic cylinder piston rod and the contact to the hydraulic cylinder piston throw of lever.The bottom of framework 9 is equipped with hydraulic cylinder 22, and an end of quadric chain 23 and the piston rod of hydraulic cylinder 22 are hinged, and the other end is connected with bent axle 27, and hydraulic power passes to each slips 17 by quadric chain 23, makes each slips 17 open or close synchronously; Also be provided with hydraulic control electromagnetic valve group 14 in the framework 9, hydraulic cylinder 22 is connected with hydraulic control electromagnetic valve group 14 by oil circuit.On working plate 16, deck body 25 around be provided with a plurality of magnetic induction sensors 21 (present embodiment is 4), the periphery of magnetic induction sensor 21 is evenly equipped with a plurality of elevator limited blocks 18, can arrive the setting operating position on the deck 1 smoothly exactly to guarantee elevator when working; Whether magnetic induction sensor 21 is arranged on the working plate 16 by elevator limited block 18 and surrounds four jiaos of zone, be used to detect elevator and be properly oriented on the deck 1 or do not leave.Be provided with flange 15 below the framework 9, be used for being connected of deck 1 and preventer.Concrete working condition when considering practical operation, flange 15, deck body 25 and working plate 16 all have side door 19 vertically, promptly excise a part vertically at flange 15, deck body 25 and working plate 16, so that avoid the oil pipe or the sucker rod at well head place when installing, as Fig. 6, shown in Figure 7.
As shown in Figure 8, for hanging on the elevator on the well workover operation machine hook, comprise housing 28, two groups of push rods, claw 32 and location hooks 37 up and down, wherein two groups of two of push rods are one group, promptly two first push rods 29 are one group, and two second push rods 31 are one group, all have spring 30 on each push rod; Claw 32 is two, is installed in the housing 28 by first 34, and claw 32 can rotate around first 34, and first 34 two ends are equipped with claw torsion spring 33, for claw 32 resets after initial position being provided and claw 32 being rotated; An all affixed claw slide block 38 on each claw 32.Location hook 37 also is two, be arranged at the top of two claw slide blocks 38 respectively, location hook 37 is installed in the housing 28 by second 35, location hook 37 can rotate around second 35, second 35 two ends are equipped with location hook torsion spring 36, for location hook 37 resets after initial position being provided and location hook 37 being rotated.
Respectively be provided with a light curtain box 41 in the framework 9 of both sides, shown in Figure 16～18, light curtain box 41 is fixed in the framework 9 by link 40, on detect light curtain 10 and detect light curtain 12 down and be installed in respectively in the two light curtain boxes 41; Between light curtain and light curtain box 41, be provided with heating tape 42; Be sealed and installed with metal backup shoe 45 on light curtain box 41, metal backup shoe 45 is provided with glass plate 44; Also be provided with thermocouple on the light curtain box 41; Heating tape 42, light curtain and thermocouple 43 are connected with control system by Explosion proof joint respectively, strictly observe the requirement of explosion proof in oil field; For dustproof, the sealing of light curtain has adopted metal backup shoe to add the form of glass plate, has both realized the sealing of light curtain, does not influence the outgoing of light curtain again simultaneously; Heating tape is to allow the light curtain remain at a warm relatively temperature environment during for operation in the winter time; Thermocouple is to be used for detecting the interior temperature of light curtain box so that the temperature in the light curtain box is monitored.
The principle of the present invention and the course of work are:
As Figure 14, shown in Figure 15, before workover treatment begins, utilize crane that deck 1 of the present invention is lifted well mouth of oil well 5 tops, and be connected with the preventer of well mouth of oil well 5 by the flange 15 on the deck 1; After connecting, hydraulic cylinder 22 work drive two bent axles 27 by quadric chain 23 and rotate, and the slips connecting rod 26 on the bent axle 27 is the center, together rotates that with bent axle 27 two groups of slips 17 are opened under the drive of bent axle 27.To mention the elevator working depth on first oil pipe (sucker rod) 7 by working machine then; At this moment, utilize hydraulic cylinder 22 to drive two bent axle 27 backward rotation again, make slips connecting rod 26 drive slips 17 and close, hold the pipe shaft of first oil pipe (sucker rod) tightly by quadric chain 23; So far, the preparation of workover treatment front clamp seat 1 is finished, as shown in Figure 5.
In last oil pipe (sucker rod) 7 o'clock of carrying, the elevator of having opened claw 32 (claw 32 hooks by claw slide block 38 hook 37 that is positioned) is at elevator limited block 18 places that drop under the traction of working rig on the working plate 16, whether this operating position is retrained by eight elevator limited blocks 18, and detect elevator by four magnetic induction sensors 21 and put in place.After elevator puts in place, well head pintle hook lock device 11 promotes first push rod 29 of top, elevator both sides, first push rod 29 promotes location hook 37 around second 35 rotation, when rotating to power that location hook 35 hooks claw slide block 38 less than the elastic force of claw 32 self gravitations and claw torsion spring 33, claw slide block 38 comes off from location hook 37, claw 32 leans on the elastic force of claw torsion spring 33 and the gravity reduction of self, the elevator pintle hook lock, and first push rod 29 resets under the effect of spring 30 elastic force behind the pintle hook lock; At this moment, the claw 32 of elevator is held oil pipe (sucker rod) pipe shaft tightly, and is nearer apart from the pipe collar that connects between adjacent two oil pipes (sucker rod).Elevator is carried oil pipe (sucker rod) under working rig traction, and promptly elevator upwards slides with respect to oil pipe (sucker rod), detects light curtain 12 instantly and detects elevator and leave fully, and during only surplus oil pipe, at this moment, elevator blocks the pipe collar of oil pipe (sucker rod); By under detect light curtain 12 and send signal and give control system (control system of the present invention is a prior art), control system passes to hydraulic cylinder 22 with the signal that receives, and opens slips 17 by above-mentioned steps by quadric chain 23, bent axle 27 and slips connecting rod 26 again.Elevator is carried oil pipe (sucker rod) on continuing under the working rig traction, when the pipe collar lower plane of next oil pipe is detected by last detection light curtain 10, last detection light curtain 10 sends signal and gives control system, control system passes to hydraulic cylinder 22 again with the signal that receives, and slips 17 is rotated until holding next oil pipe (sucker rod) tightly to the direction of closing.At this moment, hydraulic tongs stretches out and to oil pipe (sucker rod) shackle automatically, hydraulic tongs is withdrawn after the shackle, and working rig last oil pipe of traction (sucker rod) carried on continuing.So far, deck is carried the end-of-job of circulation on oil pipe (sucker rod).
Following drain line (sucker rod) 7 o'clock, on detect light curtain 10 and detect oil pipe (sucker rod) when terminal, hydraulic tongs stretches out and oil pipe (sucker rod) gone up automatically buckle, hydraulic tongs is withdrawn behind the last button.Control system (control system of the present invention is a prior art) is transmitted signal and is given hydraulic cylinder 22, opens slips 17 by quadric chain 23, bent axle 27 and slips connecting rod 26, and oil pipe (sucker rod) continues to transfer; When detecting light curtain 12 instantly and detecting the elevator base plane, send signal and give control system, control system passes to hydraulic cylinder 22 with the signal that receives, and closes slips 17 by quadric chain 23, bent axle 27 and slips connecting rod 26, holds oil pipe (sucker rod) pipe shaft tightly; Elevator continues to descend under the working rig traction, when magnetic induction sensor 21 detects elevator arrival desired location, well head is opened second push rod 31 that card device 13 promotes the elevator down either side, second push rod 31 promotes claw 32 around first 34 rotation, and claw slide block 38 upwards promotes location hook 37 simultaneously, makes location hook 37 around second 35 rotation, hook claw slide block 38 until rotating to location hook 35, claw 32 is opened, and elevator is opened card, opens card back second push rod 29 and resets under the effect of spring 30 elastic force.So far, deck is transferred the end-of-job of circulation at oil pipe (sucker rod).
Put operation for putting on the different size specification oil pipe (sucker rod) 7, can realize by the different size slip dog 20 of changing slips 17.All control signals and sensor signal are all sent and are handled by switch board 3.
Upper and lower detection light curtain of the present invention is commercial product, purchases in the MAHE13A type high accuracy of U.S. BANNER company and detects the light curtain; Magnetic induction sensor is commercial product, purchases in the BIM-IKE-Y1X type magnetic induction sensor of German TURCK company.
Important technological parameters index of the present invention: maximum load-carrying capacity is 60t, is φ 180mm by the maximum tool sizes of claw, and deck basic size is 1500mm * 600mm * 800mm.
Claims (8)
1. oil field shaft mouth clamping seat, it is characterized in that: comprise framework (9), deck body (25), hydraulic cylinder (22), quadric chain (23), slips connecting rod (26) and bent axle (27), deck body (25) is installed on the framework (9), in deck body (25), be provided with slips (17), the framework (9) of slips (17) both sides is provided with the bent axle (27) that has slips connecting rod (26), one end of slips connecting rod (26) is fixed on the bent axle (27), and the other end and slips (17) are hinged; The bottom of framework (9) is equipped with hydraulic cylinder (22), and hydraulic cylinder (22) is connected with bent axle (27) by quadric chain (23); Be provided with hydraulic control electromagnetic valve group (14) in the framework (9), hydraulic cylinder (22) is connected with hydraulic control electromagnetic valve group (14) by oil circuit; Deck body (25) is provided with working plate (16), from top to bottom be symmetrically arranged with respectively on the framework (9) of working plate (16) both sides and detect light curtain (10), well head pintle hook lock device (11), detect light curtain (12) and well head down and drive card device (13), well head is opened, pintle hook lock device (13,11) is connected with hydraulic control electromagnetic valve group (14) by oil circuit respectively; Respectively be provided with a light curtain box (41) in the framework of described both sides (9), on detect light curtain (10) and detect down light curtain (12) and be installed in respectively in the two light curtain boxes (41), between light curtain and light curtain box (41), be provided with heating tape (42); Be sealed and installed with metal backup shoe (45) on light curtain box (41), metal backup shoe (45) is provided with glass plate (44); Also be provided with thermocouple on the light curtain box (41); Heating tape (42), light curtain and thermocouple (43) are connected with control system by Explosion proof joint respectively.
2. by the described oil field shaft mouth clamping seat of claim 1, it is characterized in that: perforate in the middle of the described working plate (16), go up at working plate (16), interstitial hole around be provided with a plurality of magnetic induction sensors (21), the periphery of magnetic induction sensor (21) is evenly equipped with a plurality of elevator limited blocks (18).
3. by the described oil field shaft mouth clamping seat of claim 1, it is characterized in that: described slips (17) is four, about being divided into two groups; Be respectively equipped with the bent axle (27) that has slips connecting rod (26) on the framework (9) of four slips (17) both sides, two slips (17) of every group are hinged with slips connecting rod (26).
4. by claim 1 or 3 described oil field shaft mouth clamping seats, it is characterized in that: described slips (17) is provided with dismountable slip dog (20).
5. by the described oil field shaft mouth clamping seat of claim 4, it is characterized in that: described slip dog (20) is provided with the tooth of a plurality of right-angled triangles, has locating hole (39) on slip dog (20).
6. by the described oil field shaft mouth clamping seat of claim 1, it is characterized in that: be provided with flange (15) below the described framework (9).
7. by the described oil field shaft mouth clamping seat of claim 6, it is characterized in that: described flange (15), deck body (25) and working plate (16) all have side door (19) vertically.
8. by the described oil field shaft mouth clamping seat of claim 1, it is characterized in that: described well head is opened, pintle hook lock device (13,11) is made up of hydraulic cylinder and contact, and the front end of hydraulic cylinder piston rod is provided with external screw thread, is provided with internal thread in the contact, and both are by being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100127238A CN101429858B (en) | 2008-08-08 | 2008-08-08 | Oil field shaft mouth clamping seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100127238A CN101429858B (en) | 2008-08-08 | 2008-08-08 | Oil field shaft mouth clamping seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101429858A CN101429858A (en) | 2009-05-13 |
| CN101429858B true CN101429858B (en) | 2010-09-15 |
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ID=40645472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100127238A Expired - Fee Related CN101429858B (en) | 2008-08-08 | 2008-08-08 | Oil field shaft mouth clamping seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101429858B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900389B (en) * | 2012-10-18 | 2014-12-31 | 宝鸡石油机械有限责任公司 | Self-locked hydraulic drilling tool holder |
| CN104453740B (en) * | 2014-01-13 | 2016-02-17 | 中国石油化工股份有限公司 | A kind of well-mouth loading-unloading method of mechanization workover treatment intelligence elevator |
| CN113445939B (en) * | 2021-07-16 | 2023-08-29 | 无锡智瀚智能机器技术有限公司 | Wellhead positioning device suitable for multi-specification sucker rod and workover rig comprising same |
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2008
- 2008-08-08 CN CN2008100127238A patent/CN101429858B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101429858A (en) | 2009-05-13 |
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Granted publication date: 20100915 Termination date: 20170808 |
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